Heron Bay Weather Forecast

    • 62
    • 84

    Becoming Sunny

    • 61
    • 84

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

    • 63
    • 74

    Chance Rain Showers

    • 62
    • 76

    Slight Chance Rain Showers

    • 62
    • 75

    Partly Sunny

Today 15 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 80s to lower 90s. Light Winds. Becoming northwest 10 to 15 Mph in the afternoon.

Tonight 15 Sep San Francisco Bay Shoreline

Clear. Lows in the lower 60s. West Winds 5 to 10 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heron Bay Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (3.1 miles)

  • Lowest 1 September, 2025

    60.1 °F

  • Average September

    66.3 °F

  • Highest 1 September, 2025

    82.9 °F

Climate (2020–Present)

Hayward, Hayward Air Terminal (3.1 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    59.3 °F

  • Average High 2020–2025

    69 °F
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